Graining machine



Aug. 22., 1950 B. R. HALPr-:RN

GRAINING MACHINE 4 Sheets-Sheet 1 y Filed July 30, 1948 INVENTOR.

n2. mmh.

union Zw/Me f?. HAM Pff/v BY X ATTORNEY B. R. HALPERN GRAINING MACHINE Aug. 22, `1950 4 Sheets-Sheet 3 Filed July 30, 1948 INVENToR. @5R/www /u Pf/m ATTR B. R. HALPERN 2,519,757

GRAINING MACHINE Y Aug. 22, 1950 Filed July 50, 1948 4 Sheets-Sheet 4 Patented Aug. 22.," 11950 Vliernard R; Halpern, New York, N. Y., assignor to i Charles Zarkn, NewYork, N.V Y.

application ,iuiy 3o, 194s, 'serial No. 41,499V

The invention'heredisclosed relatesV to graining -machines of the` types lcove'redfby Zarkin Patents 1,718,020, 1,935,306, 2,074,633,- 2,413,898 and" 2,413,899' and -Metrick Patent. 1,960,447, wherein'the'tub is lsupported on ball bearings carried by the baseofthem'aohine and controlled by aso-called diamond frame mounted to slider on the base in one direction and having sliding4 connection' with the tubfat right angles to that direction. u f' 'p i Special objects of the present invention are to improve the fnounting of the"y tub on the base, the"ope'ratioi'ilof` the guiding or control'frame between the base `and tub and the smooth, quiet running operation of the machine' as a'whole'. i "Particular objects lalso are to simplifyv and improve the construction and operation ofythe4 dumperand the drive connections from the' motor whichserves to -operate'the tub and to drivethe pump which supplies the 'hydraulic power forv operating the dumper.

i Other specialY objects ofthe invention are toV improve the plate hold-down clamp structure arid mounting aiidthe retention and control of the marblesin and the discharge of'the same from the-graining tub. Y L `Objects of the invention also are to. improve the general appearanceof the machine and to. provide safety enclosure for the variousuorieratving parts of the machine. A

Otherjdesirable objects attained by theinvention` are indicated vorwillfappear in the lcourse of the followingis'pecication, wherein the novel features of theinvention are definitely set vforthA and broadly claimed.

The drawings accompanyingand forming part`v` of the specification illustrate apresent vcorn-- mercial embodiment of the as` regards this present.l illustration, `all within the .true intent and scope of the invention as hereinafter defined and claimed.

Fig. 1 is afront elevation of the machine, withA Fig. 4 is a broken Vpart sectional `front elevationrof the main operating parts of .the lmachine,

with ,broken lines indicating the tub inY partly raised relation; i

Fig. 5 is a top plan View of the base or main framey withthe graining tuband control frame removedf. 't 1 .l l

invention. :The structure, however, may be modied 'andchanged 7 alanis.- (artigo) Fgf is a horizontal sectional view as on substantially the plane of -line 6-6 of Fig. 4;

Fig; 7 is an enlarged broken sectional detail offthe discharge door structure at the end of the'rtub', including the discharge spout and sta.e

tionar'y chute;

Fig. 8 is a broken plan view of the main work-` ingportions of the machine;

TFfigbQ is an enlarged broken sectional view of the tubbearings and guide or control frame;

Fig. 10 is an enlarged broken sectional detail of one of the plate hold-down clamps;

fFig.- `11 is another broken-sectional view of` a hold-down clamp locked up in raised position, this view-beingtaken on a plane at right angles to the plane of Fig. 10; and A 1,2li`s`a dtail Yview of one of the clamp blocks for7s'ecuring the ends ofthe clamp supporting cross bar.

As ,shown in Figs. `1, 2 and 3, al1 working parts o'fv the grainer, including the tub I5 and dumper I6, are enclosed within a cabinet l1 attached to andcarried byv the base forming rportion I8 of the machine. i i 3' The top of the cabinet is made upof large, full widthdoors or covers I9, 20, hinged at 2|, 22,` so'lthat they can be raised and thrown back' to' fully espose the tub and dumper. Y Y

'Ifhe front'of the cabinet is shown as having doors 23, 24,' which can be swung open on hinges at 25, 26, to expose voperating parts, and door 24 particularly to provide access to the drain tank 2-1 `for the dumper, slidingly mounted on cross rails 23 sothat it may be pulled out for cleaningfor other purposes. To permit such removal this tank is shown ashaving a detachable coupling 29L at the back' of the cabinet with th drain or sewer connection 30.

A valveV 3| at the front of the cabinet controls admission of water from a supply pipe 32 to a spray pipe 33 across the head of the tub for plate rinsing or other purposes, a looped length of hose 134 being interposed between the tub and supply valve to allow for the lifting and lowering andgraining movements of the tub.

A starting and stopping switch 35 is shown mounted on the front of the cabinet and exposed control handles 36, 31, for controlling the lifting and lowering operations of the dumper and tub, respectively.

This complete enclosure of all operating portions of the grainer affords protection to the operators and is fa protection to the machine as well.This Venclosure may be of a soundproozfV character to keep the operation as quietas pos-- sible. While completely enclosed during normal graining operations, the action may be immediately inspected at any time on lifting the top covers or opening the front doors. The top covers will swing back into fully supported reversed relation on the stationary top panels 38 at the ends of the cabinet, in which relation the tub may be fully lifted and the dumper be operated to remove or to replace the marbles or other graining elements or materials.

This fully enclosed or cabinet type machine is porticularly well adapted for airborne transportation, as required in army service.

In the further carrying out of this purpose all parts are grouped and related as compactly as possible and are made as light in weight as consistent with required strength and most effective results.

In the machine illustrated the tub l is made of light metal such as aluminum, lined with a protective layer of rubber or the like, hinged at 39 on one end of the sub-frame 49 and adapted to be raised by a hydraulic jack 4l at the opposite end of the sub-frame, a spring 42 being connected between this end of the tub and the subframe to pull the tub, when light. downward against any frictional resistance present in the jack or other connections.

To guide the tub in its lifting and lowering movements and to brace it in its lifted relation and take lateral loads off the hinge 39, the tub is shown as having dependent guides 43 at opposite sides near tne upper end of the same to ride over the opposite side edges of the sub-frame and to remain in engagement therewith even in the fully uplifted position.`

The tub isV supported on the main frame or base I8 by Yself-aligning bearings consisting of a set of three ball cups 44, d5, 46, mounted in triangular relation on top of the main frame and carrying the balls i1 on which the bearing platesV @i8 at the under side of the sub-frame ride.

--In the illustration one bearing, M, is located at one end of the main frame and the two other bearings, 45, 16, are located at the opposite end of the main frame, in this case the hinge end of the tubwhere most of the load may be concentrated in the tilting movements of the tub.

This self-aligning, three-point bearing is of great advantage in the manufacture and maintenance of the machine, since no problems of mis'- alignment are present and the load is always substantially uniformly distributed, with automatic equalization for wear as it occurs. This three bearingconstruction also is lighter and less expensive than the four bearing structures heretofore used, eliminating need for machining the ball cup pads for leveling.

The self-aligning, three-point bearing advantages are also incorporatedrin and carried out in the guide or control frame structure.

In the machine illustrated the control frame :i9 is shown as of generally triangular structure having three dependent guide rolls 59, 5l, 52, at the approximate corners of the same sliding in guides 53, .55, on top of the main frame. The first two sets of these guide bearings 50-53 and 5 l-fl, are shown located at opposite sides of the single tub bearing i4 at one end of the machine and the single slide bearing 52-55 at the oppositeend of the main frame between the pair of tub bearings 45, the triangular relation of the two sets of bearings being thus reversed torprovide a compact structure and more or less equalize and distribute the various bearing loads.

The connections between the control frame and tub are shown as projecting guide rolls 5S, 51, on top of the frame engaged in aligned guides 58, 59, on the bottom of the tub sub-frame. These two last mentioned guides are shown in Fig. 8 disposed on a line between the guides at opposite ends of the triangular control frame and approximately in line with the vertical drive shaft of 'themachina x The shaft .S9-carries a crank or eccentric 5| at its upper end engaging a, bearing 62 on the underside of the tub sub-frame and is shown as carrying a counter-weight G3 having a removable segmental portion 64 at the outer rim', of a size and positioned to match as closely as possible the center of mass of the tub. This construction also locates the counter-weight in compact relation, substantially at the level and within the outline of the guide frame 49.

Further carrying out the idea of compactness, few parts and light weight, a single direct drive is provided for both the tub and the pump which furnishes the hydraulic', pressure for liftingthe tub and operating the dumlper.A This drive is shown as a single V-belt connection 65 running from the pulley 66 onvthe motor 61, located at oneend of the main frame around opposite sides of the large pulley 68 onv the lower end of shaft 69, about the smaller pulley 69 on the pump 1 at the opposite end of the main frame.

The pulleys 68 and 69 areproportioned to provide the desired gear reduction to the lgraining tub and to the pump, respectively, and this relation, as shown in Fig. 6l provides sufficient wrap of the belt about all three pulleys for eicient drive from' themotor to both the tub and the The motor is shownmounted on a panel 1I extending across the end of the main frame hingedly lsupported at one end as by means of spring loaded bolt fastenings 12, sufliciently loose or adapted tobe loosened to permit the opposite end of the panel to be swung outward away from the supporting frame, as by means of pressure applying hand screws 13 bearing against the end of the frame. This provides a simple, direct, single adjustment for taking up slack and adjusting belt tension on allvthree pulleys 66, 68 and 69.

The triangular guide frame 49 is shown as riding on rollers 14 operating in grooves 15 at the sides of the guide grooves 16 in the guide plates 53, 5,4, 55. These small rollers'14 carry the verticalV loadson the reciprocating guide frame and keep it in smooth, quietrunning operation'.

Lubrication of the main working parts is provided for in the illustration by grease gun nttings 1.1 on the front of the main frame, having connections 18 extending to the ball cups 44, 45, 46, and similar ttings 19 on the front of the control frame 49, having connections 88 extending to the downwardly :and upwardly projecting guide rollers on that frame.

The tub is shown as having a dumping door Si at itslower or hinge end carried by a hinge rod 82 provided with an outwardly projecting lever arm B3 engagedl by the upperend of a spring link 34 which has its lower end pivotally con-- the tub and to operate as a strut to rock the I. discharge the marbles.

door openaautomaticallyfas.the vtub is raised to Toproperly conne the `released marbles, the door openingfin the end of the bottom portion of. the tub, is. shown" substantially lsurrounded by an outwardly projecting,U downwardly inclined spout `8l'. This discharges into the downwardly inclinedl stationary chute 88 which serves to open the trap-door 39 in the wall ofthe dumper, as

thelatter isl'o-wered in the manner disclosed in the earlier issuedpatents identiiied.

4The lplumper i6 is'shown as' carried by armsSII having sleeves eI aligned overtheends of bearingfsleeve's'` fixed on supporting arms 93 projectinglfrom the end o'f'the mainframe, they parts being hinge'dly connected in .this relation by `a tubular hinge rod 94 inserted ythrough thealigned sleeves.' lj

' The hydr' ulic rarn'95 for operating the dumper is shown pivoted at "196'- on a bracket or step 91 v at the end of the main frame.

yTo preventany dripdronfnthe tub or discharge spout dropping down on the motor or belt drive connections, an inclined panel 98 is shown projecting from the end of the main frame over the top of the motor.

The tub is shown as constructed with inwardly extending stiffening flanges 99 about the upper edges of the same. These may act as retainers for the graining balls and they are utilized also in the present disclosure as supports for the cross bars 00 which carry the plate holding clamps. l

These bars are shown as of T cross section and disposed each with the stem portion lill of the T resting at on the tub flanges S9 and the head forming iianges IEIZ, H13, of the T disposed vertically for engagement by the vertically opposed jaw portions IM of the clamps.

The lower flanges |03 of the cross `bars are i The clamps are shown as having plunger prtions I 09 sliding in the tubular guide portions I II) and pressed downwardly by enclosed springs I I I. Beveled pads II2 of rubber or other suitable material on the lower ends of the plungers afford iirm holding engagement of the plates.

The downward spring pressure of the clamps, through reaction against the cross bars; holds these clamps yieldingly in position.

To facilitate the release and easy shifting of the clamp-s, they are shown as having thumb buttons or projections II3 on the plungers |09 operating through bayonet slots I Ill in the tubular guide portions II. These buttons may be lifted to take the pressure of the pads ofi the plate and then upon turning the buttons over the shoulders II5 at the upper ends of the bayonet slots, the holding pads or feet may be locked back in the'lifted or retracted position, free of the plate and with the clamps free of holding tension against the supporting bar, all as shown in Figs. and 11.

What is claimed is:

1. A graining machine comprising a base, a

in triangular relation on said base and sup-portingsaid tubfor graining movements on the base, a control. frame .between the tub: and zbase mounted to slide in one direction on the base and having a sliding connection, with said tub in a direction at right angles to said lirst direction andafrotary drive connection to said tub.

f. 2; A graining machine comprising a base, a graining tub,.a set of three ball bearings arranged in'trian'gular relation on said base and supporting said tub forgraining movements on the base, azcontrol frame betweenv the tub and base mounted to slide in'. one direction lon the .base and having a sliding connection with said tub -in a direction at right angles to said iirst direction andfa'rotarydrive.` connection to said tub, said control frame having three sliding guide connections with said base arranged triangularly and oppositely to the triangular relation of the three tub bearings on ythe base.

V3. A graining machine comprising a base, a graining tub, a set of three ball bearings arranged in triangular relation on said base and supporting said tub for graining movements on the base, a control frame between the tub and base mounted to slide in one direction on the base and having a sliding connection with said tub in a direction at right angles to said rst direction and a rotary drive connection to said tub, said control frame being of generally triangular shape and having sliding connections with the base at the Ythree corners of the same.

4i.` A graining machine comprising a base, a

graining tub, a set of three ball bearings arranged in triangular relation on said base and supporting said tub for graining movements on the base, a control frame between the tub and base mounted to slide in one direction on the base and having a sliding connection with said tub in a direction at right angles to said first direction and a rotary drive connection to said tub, said tub bearings being arranged two at one end of the base and the third at the opposite end of the base, said tub having a sub-frame on which it is hinged at that end Where the two tub bearings are located.

5. A graining machine comprising a base, a graining tub, a set of three ball bearings arranged in triangular relation on said base and supporting said tub for graining movements on the base, a control frame between the tub and base mounted to slide in one direction on the base and having a sliding connection with said tub in a direction at right angles to said first direction and a rotary drive connection to said tub, two of said tub bearings being located at the corners of the base at one end and the third bearing being located intermediate the corners at the opposite end of the base and said control frame being of substantially triangular formation with one slide connection with the base disposed between the two tub bearings at one end of the base and having two other slide connections with the base at opposite sides of the single tub bearing at the opposite end of the base.

6. A graining machine comprising a base, grooved guides on said base, said guides having parallel grooves at the sides of the guide grooves therein, rollers free to turn in said parallel grooves, a control frame riding on said rollers and having rollers riding in said guide grooves, a tub mounted for graining movements on the base over said frame, control connections between said frame and tub and lubricating connections extending from the frame at one side to said guide rollers.

7'. A `graining machine comprising a base, grooved guides on said base, said guides having parallel grooves at the sides of the guide grooves therein, rollers free to turn in said parallel grooves', a control frame riding on said rollers and having rollers riding in said guide grooves, a tub mounted for graining movements on the base over said frame, eontrel connections loetween said frame and tub, ball cups on said hase, balls rolling in said cups for supporting the tub and lubricating connections extending to said ball cups and to said guidevlollers on the Qontrol frame. e

BERNARD R.

REFERENCES CITED The following references are of reeord in the file of this patent:V

- 8 UNITED STATES PATENTS Numb?? Number Name Date Estebrouk 1f- July 1.4.a 1699 Cornwall, Sept- 19,A 1916 Langen et a1- Sept: 21 1924 Zarlsin June 19, 1929 Bekett 'l1 1933 Beckett Sepia 12,1 1933 Huck ,Sept- Y193.3 .Zerliin NQV- .14, 1993 Metrick 1934 t". Fritshe ,Apr- 21 1936 Zarkn Mar, .231 193'? Mael; 1940 C0191/ et al Dea `211 1943 Zarkin Jan. 'L 1947 .Zarlsn 1 Jan, 1, 191'? EQBEIGN PATENT- Country Date Great Britain Sept. 5, 1929 

